<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
#div1{ width:300px;
       height:300px;
	   background:red;
	   border:2px solid #000;
       font-size: 12px;
       text-align: center;;
       line-height: 300px;
       color: #fff;
	}

</style>
<script>
window.onload=function(){

startMove();


}
function startMove(){
setInterval(function(){
	var oDiv=document.getElementById('div1');
        oDiv.style.width=parseInt(getStyle(oDiv,'width'))-1+'px';
        oDiv.style.fontSize=parseInt(getStyle(oDiv,'font-size'))+1+'px';
},30)
}
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];//IE的样式
}
else
{
	return getComputedStyle(obj,false)[attr];//火狐的样式
}
}
</script>
</head>

<body>
<div id="div1" style="width:200px; font-size:12px">谢敏，love   you</div>
</body>
</html>
